Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868492 | Method for contactless testing of conducting paths in a substrate using photo-assisted tunneling | Johannes G. Beha, Armin U. Blacha, Rolf Clauberg | 1989-09-19 |
| 4843329 | Method for contactless testing for electrical opens and short circuits in conducting paths in a substrate | Johannes G. Beha, Armin U. Blacha, Rolf Clauberg | 1989-06-27 |